[Serializer] Object class resolver

Author: alanpoulain

src/Symfony/Component/Serializer/CHANGELOG.md

@@ -19,6 +19,8 @@ CHANGELOG
    either `NormalizerInterface` or `DenormalizerInterface`
  * deprecated creating a `Serializer` with encoders which do not implement
    either `EncoderInterface` or `DecoderInterface`
+ * added the optional `$objectClassResolver` argument in `AbstractObjectNormalizer`
+   and `ObjectNormalizer` constructor
 
 4.1.0
 -----

src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php

@@ -44,13 +44,14 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
      * @var callable|null
      */
     private $maxDepthHandler;
+    private $objectClassResolver;
 
     /**
      * @var ClassDiscriminatorResolverInterface|null
      */
     protected $classDiscriminatorResolver;
 
-    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null)
+    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, callable $objectClassResolver = null)
     {
         parent::__construct($classMetadataFactory, $nameConverter);
 
@@ -60,6 +61,7 @@ public function __construct(ClassMetadataFactoryInterface $classMetadataFactory
             $classDiscriminatorResolver = new ClassDiscriminatorFromClassMetadata($classMetadataFactory);
         }
         $this->classDiscriminatorResolver = $classDiscriminatorResolver;
+        $this->objectClassResolver = $objectClassResolver;
     }
 
     /**
@@ -86,7 +88,7 @@ public function normalize($object, $format = null, array $context = array())
         $data = array();
         $stack = array();
         $attributes = $this->getAttributes($object, $format, $context);
-        $class = \get_class($object);
+        $class = $this->objectClassResolver ? \call_user_func($this->objectClassResolver, $object) : \get_class($object);
         $attributesMetadata = $this->classMetadataFactory ? $this->classMetadataFactory->getMetadataFor($class)->getAttributesMetadata() : null;
 
         foreach ($attributes as $attribute) {
@@ -155,7 +157,7 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
      */
     protected function getAttributes($object, $format = null, array $context)
     {
-        $class = \get_class($object);
+        $class = $this->objectClassResolver ? \call_user_func($this->objectClassResolver, $object) : \get_class($object);
         $key = $class.'-'.$context['cache_key'];
 
         if (isset($this->attributesCache[$key])) {

src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php

@@ -30,13 +30,13 @@ class ObjectNormalizer extends AbstractObjectNormalizer
 {
     protected $propertyAccessor;
 
-    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyAccessorInterface $propertyAccessor = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null)
+    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyAccessorInterface $propertyAccessor = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, callable $objectClassResolver = null)
     {
         if (!\class_exists(PropertyAccess::class)) {
             throw new LogicException('The ObjectNormalizer class requires the "PropertyAccess" component. Install "symfony/property-access" to use it.');
         }
 
-        parent::__construct($classMetadataFactory, $nameConverter, $propertyTypeExtractor, $classDiscriminatorResolver);
+        parent::__construct($classMetadataFactory, $nameConverter, $propertyTypeExtractor, $classDiscriminatorResolver, $objectClassResolver);
 
         $this->propertyAccessor = $propertyAccessor ?: PropertyAccess::createPropertyAccessor();
     }